How to stack promises dynamically?

Question

I have a nested object subprojects with a property of type array: userEstimates holding object(s) Estimate.

I am looking to iterate through userEstimates and push a fetch/promise to an array without calling it.

main (inside async function)

await subproject.getUserEstimates(true);
let stack = [];

subproject.userEstimates.forEach(ue =>
    stack.push(ue.fetchAvailableRates)
);

console.log(stack);  // 3) [ƒ, ƒ, ƒ]

await Promise.all(stack);

fillForm(subproject);

however, attributes on subproject are not defined when calling fillForm

function definition for fetchAvailableRates:

fetchAvailableRates = () => {
  this.availableRates = fetch(...)
  .then((resp) => {
    if (resp.ok) return resp.json();
    else throw new Error("Something went wrong");
  })
  .then((r) => {
    ...

    return {
      Rate.get(), // returns class
      ...
    };
  })
  .catch((e) => {
    console.error(e);
  });
};

EDIT: Changed my wording frrom queue to stack as i'm trying to run all requests at once, and I don't care about order